Stone-saw.



No. 840,546. -PATBNTED JAN. 3, A1907.

zr. s. Young. STONE SAW; I APPLICATION FILED JULYI, 1905.

ATTORNEYS JAMES SYLVESTER YOUNG, OF BETHEL, VERMONT.

STONE-SAW,

Specification of Letters Patent.

Patented J an. 8, 1907.

Application filed iluly 1,1905. Serial No. 267,932.

To all whom t waa/,y concern:

Be it known that I, JAMES SYLvEsTER YOUNG, a citizen of the United States, and a resident of Bethel, in the county of Windsor and State of Vermont, have invented a new and Improved Stone-Saw, of which the following 1s a full, clear, and exact description.

This invention relates to Stone-saws; and the object of the invention is to provide improved means for facilitating the feeding of shot to the saw during its operation and to provide improved means for retaining cutters or teeth in the saw-body.

The invention consists in the construction and combination of parts to be more fully described hereinafter, and setforth in the claim.

Reference is to be had to the accompanying drawings, forming a part of this specifica tion, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a vertical crosssection through a saw-frame, showing one of my Saws attached therein, certain parts being broken away. Fig. 2 is a vertical section taken substantially upon the line 2 2 of Fig. 1 and upon a much enlarged scale. In this view the parts are broken away. Fig. 3 is a fragmentary perspective, also broken away, showing a portion of the lower edge of a sawblade constructed according to my invention. Fig. 4 is a perspective, also broken away, representing a saw tooth or cutter adapted to be received in the saw-blade. Fig. 5 is a horizontal` section taken near the lower edge of a sawblade and `illustrating the manner in which one of my cutters or teeth is inserted. v Referring more particularly to the parts, 1 represents a saw-frame of any common construction adapted to be reciprocated and fed downwardly in the usual manner. This frame comprises the usual transverse rails 2, which are adjustably attached in the frame in any suitablemanner so as to saw slabs of stone of any thickness desired. The rails 2 are disposed in pairs, as indicated in Fig. 2, and` between them I clamp my saw-blade 3 by means of clamping-bolts 4, the same passing through vertical slots 5 formed, in the upper edge of the blade 3, as indicated. The blade 3 projects a considerable distance below the rails 2, as indicated, and its lower vedge is stayed in position by straps 6, which attach in openings 7 near the corners of the blade, as indicated, said straps having tie-rods 8, connected to their outer extremities, as shown. These tie-rods extend to the sides of the frame, where they are anchored in suitable sockets 9, the connection at this point including adjusting-nuts 10. The lower edge 11 of the Saw-blade 3 is provided with a plurality of notches 12. The inner edges 13 of these notches are parallel with the edge 11, but the side edges 14 converge slightly downwa rdly, as indicated. The edges 13 and .1.4 are preferably formed with tongues 15 and 16, having oppositely-beveled faces, as indicated in Fig. 5. The notches 12 are for the purpose of receiving cutters or teeth 17, one of which is very clearly illustrated in Fig. 4. These cutters consist of plates the upper portions whereof conform substantially to the form and dimensions of the notches 12; but these plates are of greater depth than the notches, so that when'- attached in position they project below the lower edge 11 of the blade, as indicated in Fig. 1. These cutters are provided on their side edges with grooves 18 and on their upper edges with grooves 19, 'the forms of said grooves 18 and 19 corresponding to the corresponding tongues 15 and 16.

In Fig. 5 I illustrate the manner of applying or setting the cutters 17 into position. In effecting this the cutters are bent into a curved or distorted form, as indicated in Fig.

5, until the side edges are drawn in sufli-v ciently to enable ,the grooves 18 to receive the tongues 16. The cutter being inserted in this away would then be iiattened out to its normal Shape and then forced upwardly in its notch until the groove 19 engages the tongue A15. The tooth would then be very securely held in position.

It should be understood that in the sawing operation as the saw is reciprocated a quantity of shot or similar substance is fed to the saw, the function of this substance being to assist in the abrasion of the stone by the lower edge of the saw-blade. I provide means for facilitating the feeding of this shot to the endthat it will distribute itself substantially equally on each Side of the sawblade. For this purpose I provide the entire body of thel blade 3 with openings 20, through which the shot may ass from side to side. These openings may e of any form desired, but are preferably rectangular, as

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indicated, and located above the spaces between the cutters 17. Between the openings 20 the usual Shapers 21 are attached by means of bolts passing' through holes 22, ar-

ranged in rows at different levels.

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Having thus described my invention, I claim as new and desire to secure by Letters Patent- A stone-saw consisting of a blade having a plurality of notches in the lower edge thereof, said notches having beveled side edges converging downwardly and beveled inner edges7 cutters mounted in said notches and having downwardly-converging side edges with grooves receiving the side edges of said notches, said cutters having each a groove in its upper edge receiving the inner edges of said notches, said cutters consisting each of a single plate projecting below the lower edge of said blade, substantially filling said 15 notches, and projecting laterally at the sides of said blade, the side edges of said cutters which engage the side edges of said notches extending continuously to the lower edges oi' said cutters.

In testimony whereof I have signed my naine to this specification in the presence of two subscribing witnesses.

JAMES SYLV ESTER YOUNG.

Witnesses:

Trios. J. Lovnnn, JOHN J. WrLsoN. 

